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造纸涂布需要使用优质的造纸消泡剂

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造纸涂布需要使用优质的造纸消泡剂

发布日期:2018-10-22 作者: 点击:

 

  在造纸涂布加工的过程中,由于需要添加各种颜料和其他物质,这些颜料在制备过程中会通过机械搅拌和研磨操作而生成,因此在贮存罐和涂布辊中容易产生大量的气泡。这些气泡的存在不仅影响正常操作,而且会严重过的影响纸张质量。泡沫对造纸涂布的影响不是不能解决,一般来说造纸企业会将适量的消泡剂添加到发泡系统中,以消除气泡。涂布造纸消泡剂能迅速消除泡沫,抑制泡沫形成,使纸张均匀平滑,涂层均匀,从而产生高质量的纸张。
 
北京11选5  由于在造纸涂布工序中,所添加的造纸消泡剂会随着涂料涂到纸面上,从而留在纸张当中,所以造纸消泡剂的优劣也会影响纸张的质量,这时我们就会对涂布用的造纸消泡剂提出一些要求:① 具有消泡、抑泡性能;② 能够提高纸张的光泽度,润滑和表面强度等多功能。在造纸涂布的过程中,所添加的消泡剂会与涂料一起涂在纸张表面,留在纸张上,因此消泡剂的质量也会影响到成品纸张的质量。这就需要大家对于造纸涂布消泡剂涂提出一些要求:1)消泡抑泡的性能好;2)能够提高纸张的光泽、润滑性和表面强度等功能。

 

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  SHUIXINGXIAOPAOJISHIJINGGUORUHUAJIHEQITATIANLIAORUHUAHOUXINGCHENGDESHUIXINGTIXI。ZAISHENGCHANDEGUOCHENGDANGZHONGSUOYONGDEYUANLIAODOUSHIWUDUDUIRENTIWUHAIDE,JUYOUXIAOPAOKUAI、FENSANXINGHAO、CHIJIUBAOCHIYIPAO、BUFENCENGDETEDIAN。TEBIESHIYONGYUJULVYIXISHUZHI、FANGZHIYINRAN、HUAXUEFANYING、SHIYOUHUAGONG、JINSHUJIAGONGYE、SHENGWUFAJIAO、SHUICHULI、YAOPIN、SHIPINFAJIAOXINGYEDEXIAOPAO。ERYOUXINGXIAOPAOJISHIBUJINGGUORUHUADE,YOUKUANGWUYOUHEJUMIZUCHENG。JUYOUTUCHUDEXIAOYIPAOXINGNENG,TEBIEZAIYOUXINGTIXIFENSANXINGLIANGHAO,SHOUPHYINGXIANGJIAOXIAO。ZHUYAOYONGYUGEZHONGYOUSHUITIXI,RUHECHENGSHUZHI、JIAONIANJI、ZHANHEJI、JIANSHUIJI、YALINSUANZHI、HUAGONGHECHENG、ZUANJINGNIJIANG、YUANYOUZHENGLIU、RUNHUAYOU、200°CYISHANGGAOWEN、QIANGSUAN、QIANGJIANTIXIXIAOPAO、KONGPAO、TUOPAO、YIPAO。

 

   日常生产过程中,有些企业在使用水性消泡剂之前会选择开稀,至于如何开稀,其实有很多讲究。
北京11选5   1、建议用增稠剂开稀,不要直接用水。用水开稀会打破消泡剂本身的粘度体系,控制不好的话可能会产生分层甚至破乳的情况,这样会大大影响消泡剂的性能。

北京11选5   2、KAIXIHOU,ZHUYIDIAOZHENGTIXIDEPHZHI。PHZHIHUIYINGXIANGZHENGGETIXIDESUANJIANDUHEHOUQISHIYONGXIAOGUO。ZHEILIXINWANCHENGJIANYIDAJIAYONGCESHIJIEGUOGENGJIAJINGQUEDEPHSHIZHI。

北京11选5   3、ZHUYIGUHANLIANGBUNENGTAIDI。TONGCHANGQINGKUANGXIA,XIAOPAOJIDEGUHANLIANGBUNENGKAIXIDAO5%YIXIA,ZHEIYANGHUIYANZHONGYINGXIANGXIAOPAOJIDEXIAOGUO。SUOYIXINWANCHENGTIXINGYONGHUXIAOPAOJIBUKESUIYIKAIXI,YIDINGYAOZHUYIZHUYIGUHANLIANGBUNENGDIYU5%。

   4、注意添加防腐剂。消泡剂开稀过后一定不要忘了最后一步,就是加入防腐剂来让消泡剂性能保持更长时间。
 

消泡剂

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   聚醚酯类消泡剂的特点是消泡速度一般;但脱气、抑泡效果强;其消泡性能受温度、纸机速度影响小。若系统内使用施胶剂时要注意,该消泡剂可能影响施胶。脂肪醇类消泡剂优点是:消泡速度快;不参与抄纸反应,对施胶效果无影响;在以废纸为原料的纸张或纸板生产时对白水有较强的消泡性能;在水中易分散,使用不受纸种和工艺限制。气泡是稳定地存在于液体介质中的气体。一种是不稳定气泡,空气导入纯液体中,气泡迁移到表面,然后破裂,泡内的气体消失;另一种是稳定气泡,液体中含有表面活性剂,当气泡向空气界面上升,被一层表面活性剂的表面膜包围住。涂料中的气泡通过几个因素达到稳定,由于稳定的夹层变得很薄,表面活性剂稳定吸附了空气并在制造和施工过程中渗入涂料,从而形成稳定的气泡。

本文网址:http://kvque.com/news/481.html

关键词:消泡剂,工业消泡剂,有机硅消泡剂

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